Windshield-cleaner part



Aug. 31, 1926. 1,597,999 J. L.. NlLsoN Er AL WINDSHI ELD CLEANER PART Filed August 19, 1922 Patented Aug. 31, 1926.

JOHN I.. NILSON AND JOHN PRINCE, OF CHICAGO, ILLINOS.

WINDSHIELD-CLEANER PART.

Application filed August 19, 1922. Serial No; 582,837.

Uur invention relates to windshield cleaners, and has particular reference to preservation of the eiiiciency and prolongation of life of the squeegee element. rl"he object of this invention is to obviate the loss of time, expense and wastage incidental to renewals of squeegees made necessary by weakenings and break-ages of the flexible or rubber portion over the edges of its comparatively rigid back or rib and the more rapid deterioration by sun and rain at that line of juncture between fiber and metal.

With the above named object in View our invention consists in the novel construction, combination-and arrangement of parts hereinafter described in detail, illustrated in the accompanying drawing, and more particularly pointed out in the appended claim.

In the drawing- Figure 1 shield cleaner arm carrying a squeegee and adapted to be secured to the windshield cleaner motor well known to this art, and showing a type of construction which forms the subject-matter of a separate application.

Figure is a side view of Figure l.

Figure 3 is a section taken substantially on the line 3 3 on Figure 2.

In the several views .2 represents the cleaner-arm mounted in a bore of a shaftcoupling member 3 and therein secured by a set-screw 2. The member 3 is shown with a split portion 4 extending from its side to a shaft-bore 5 ladapted to be contracted upon the shaft (not shown) by a screw 4 adapted to contract the slit 4 and therewith the bore 5. Un the opposite endV of the arm 2 is a clamp comprising an open sleeve portion 6 that is contracted upon the arm 2 and having sides 7 and 8 which are drawn by a screw 9 toward each other to grip the arm 2 and a U-shaped back or stiftening rib for the flexible portion of the squeegee held between said sides 6 and 7,

" but none of the foregoing parts are specifically involved in the present improvement.

The present' improvement'relates specifically to the construction of said U-shaped back or rubber holder and its edges- 1() and ll-which have heretofore cutand acutely v bent the flexible portion along the 'bending line. Said edges are in the present improve- 1s a side elevation of a iwind-,

meut curved away from each other, as shown best in Figures l and 3, or receding away from immediate Contact with the flexible portion, or rubber, 12 to leave normal spaces 13 and 14 between the flexible portion and its metallic holder, said spaces, as shown, contracting gradually inwardly. This gradual contact of metal with liber, instead of the usual abrupt one, not only obviates acute bending of the fibrous portion along-that line, but shades and protects against the elements that portion ofthe flexible part which is most severely bent during the oscillating movement of the squeegee over the surface of a Windshield. The gradual closing in of metal upon the elastic portion 12 also tends during to and fro bendings of the latterto work out 4any moisture tending to collect along the line of juncture in the old forms stated, obviates a suddenly weakened line which soon disrupts or weakens the required resistance to the elastic movements. vOne of the movements is indicated by dotted lines in Figure 3 as Well as the protection against cutting or abrupt bending afforded the lexiblepart 12 by the receding edges 10 and 11 which are arranged to lend support in the usual way at the end of the bending movementwithout intensifying the bend along asingle line, or intensifying the action of the elements along said line by sudden, unshaded contact of metal with fiber. The edges 10 and 1l form in themselves a rain and wind-shield, as it were, for that part of the fibrous portion which must endure the greatest bending strains,l without at the same time causing the' afore-A said injurious contacts.

Weclaim as our invention` In a Windshield cleaner squeegee1 the combination with a flexible wiper strip,of a rigid channeled back ,between the sides of which said strip is held and beyond which it projects, the edges of said lsides adjacent to the bending line of said strip being arranged spaced apart and normally'out of contact with said strip.

In testimony whereof we have hereunto signed our names. I

JOHN L. NELSON.. JOHN PRINCE.

of construction, and always, as 

